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FIALHO,C.M.T.; SILVA,A.A.; MELO,C.A.D.; COSTA,M.D.; SOUZA,M.W.R.; REIS,L.A.C.. |
ABSTRACT: Weeds and microorganisms interacting with their rhizosphere may influence nutrient absorption, which is an important factor for plant competition. The purpose of this study was to evaluate the microbiological activity, inorganic phosphorus solubilization (Pi) and acid phosphatase in the cultivated soil, in a combination of soybean (Glycine max) plants and weeds. Soybeans were cultivated in monoculture and in competition with Bidens pilosa, Brachiaria decumbens (Syn. Urochloa decumbens) and Eleusine indica, under two conditions: a) plants competing without contact between the roots b) plants competing with contact between the roots. A nylon screen with a 50 µm mesh was added to prevent contact between the roots of the species in competition so... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Soil respiratory rate; Metabolic quotient; Inorganic phosphorus solubilization; Phosphatase. |
Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100247 |
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SILVA,D.V.; FREITAS,M.A.M.; SOUZA,M.F.; QUEIROZ,G.P.; MELO,C.A.D.; SILVA,A.A.; FERREIRA,L.R.; REIS,M.R.. |
The success of the intercropping among cultivated species depends on the adoption of practices that provide, in due course, greater competitive ability of a species over another. The objective of this study was to evaluate the use of glyphosate herbicide in the suppression of Brachiaria (signalgrass) intercropped with maize. The experiment was conducted in a randomized complete block design with four replications. The treatments were arranged in a 5 x 2 + 2 factorial arrangement, the first factor corresponding to the doses of glyphosate (48, 96, 144, 240, 480 g ha-1 of the acid equivalent (a.e)) and the second one to the vegetative stages of the signalgrass at the time of application (2 and 4 tillers). Two controls were added to the treatment list,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Urochloa brizantha; Crop-livestock integration. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000100133 |
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REIS,M.R.; MELO,C.A.D.; RAPOSO,T.P.; AQUINO,R.F.B.A.; AQUINO,L.A.. |
ABSTRACT The presence of weeds in commercial fields of cabbage may interfere directly and indirectly on yield and on the quality of the commercial product. Therefore, the satisfactory production depends on a successful control of weeds. Because of the limited availability of herbicides registered in Brazil for cabbage crop in addition to the lack of information in the literature, the objective of this work was to evaluate the selectivity of herbicides to cabbage. The herbicides S-metolachlor (1,740 and 768 g ha-1), oxyfluorfen (240 and 96 g ha-1), flumioxazin (40 and 40 g ha-1) clomazone (720 and 360 g ha-1) and oxyfluorfen + flumioxazin (240 + 20 and 96 + 20 g ha-1) were applied before and after transplant of seedlings, besides the S-metolachlor +... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Herbicides tolerance; Weed management; Yield. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100226 |
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